I've reached a fork in the road on dosing. From what little I've read on the two methods, kalk seems easier and more reliable but two part seems more precise? Also dosing kalk in ato, you can use a Ph probe to monitor a runaway ato pump by setting a cutoff of Ph rises too much. I like that as a backup for ato. Are there any other easy and reliable backups for limiting runaway ato? So far, looks like my best option would be to use both though I'd like to find a simpler solution. Thanks in advance for your thoughts.